Lower Appendage - Bones

Question 1

Os Coxa

Answer 1

Made up of three fused bones
1. Ilium (articulates with the sacrum)
2. Ischium (most posterior)
3. Pubis(most anterior)

Question 2

Acetabulum

Answer 2

• Ilium, ischium, and pubis
• Lateral surface
• Articulates with head of the femur
• Best landmark for lateral

Question 3

Pubic symphysis

Answer 3

Fibrocartilage disc between pubic bones

Connects the two Os Coxa anteriorly

Question 4

Parts of the ilium

iliac crest

Answer 4

Upper brim and most superior ridge

Question 5

Parts of the ilium

Greater sciatic notch

Answer 5

For sciatic nerve
* Inferior to the posterior inferior iliac spine
* Large deep posterior notch
* This is the best landmark for posterior

Question 6

Parts of the ischium

Ishial spine

Answer 6

Inferior to greater sciatic notch

Question 7

Parts of the ischium

Ischial tuberosity

Answer 7

• Posterior projection you sit on
• Inferior to the ischial spine

Question 8

Parts of the ischium and pubis

Obturator foramen

Answer 8

• Formed by ischial and pubic rami
• Largest foramen in the entire body

Question 9

Differences between male and female Os Coxa

Answer 9

Male has greater sacral curvature
Female less of savral curvature
Male coccyx points anteriorly
Female coccyx points inferiorly
Male has a shorter distanced pelvic outlet
Female has a long distanced pelvic outlet
Male pubic angle less then 90 degrees
Females greater than 100 degrees

Question 10

Femur

Answer 10

Thigh area

2 bones (Left and Right)

Question 11

Patella

Answer 11

Kneecap

2 bones (Right and Left)

Question 12

Tibia

Answer 12

Medial lower limb bone
(distal to femur)

2 bones (Right and Left)

Question 13

Fibula

Answer 13

Lateral lower limb bone
(distal to femur)

2 bones (Right and Left)

Question 14

Tarsals

Answer 14

Ankle bones

14 bones (7 on each side)

Question 15

Metatarsals

Answer 15

Foot bones

10 bones (5 on each side)

Question 16

Phalanges

Answer 16

Toe bones

28 bones (14 on each side)